Half lap for combing textile fibers



" March s, 1927. 1,620,031

J. K. LANNING HALF LAP FCR COMBING TEXTILEFIBERS Filed March 17, 1926 Patented Mar. 8, 1927.

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'Application fueanarca 17,` 192e. serial N0.s5259.

This invention'relates `to half-laps forte);-

l whichsllall be durable in `construction and not subject to the formation of any minute crevices or cracks for the lo'dgment` of lint, while locating the `needle points in such relation to the surfaceof the slotted matrix or bed, in 'which the comb-bars are mounted, as to 'avoid any accumulation of lint `inathe angle between the bed of the half-lap and the overhanging row of needle points.

To this end the-invention comprises essentially .an elongated flat comb-bar proportioned to snugly fit in and fill its receiving slot in the bed of the half-lap, said bar being slotted from its outer edge inwardlyrintermediate of the front and rear faces to snugly receive the butt ends of a row of needles whose points project outwardly beyond the outer edge of the bar so as to afford complete reinforcement and support for the needle, both front and back, and prevent the formation of creVicesd-ue to laking of the solder when the needles are applied to the forward face of the bar. A further feature of the invention resides in the construction cation and will be defined in the claims hereto annexed.

In the accompanying drawings I have shown a. construction and arrangement of comb-bar mounted in the half-lap embodying the principles of this invention', in which:

Figure l is an end elevation of the halflap bed mounted on its rotating sleeve.

Figure 2 is a detail view of one end'portion of the half-lap on the sectionalplane 2 2 of Figure l to show thecomb-bar in front elevation as it is seated in its supporting slot in the bed.

In the-practice of this inventionas illustrated rin thedrawings, the arcuate half=la`p bed 2 is provided with front and frear eXtensions 2a and 2b by which the half-lap bed is securely fastened to the supportingsleeve l', by'means of suitable fastening screws in a well known manner.

This half-lap bed 2 is formed with a series of longitudinalslots extending'from end to end and radiating from the axis atprogresi sively increasing anglesto the intersecting radiiof the half-lap bed to' 'give-an increasingly sharp edge from therear of the halflap Ato the front, withreference' to vthev direction of location indicated by the arrow in Figure 1. Y

The comb-bar itself comprises a Ilongitudinal flat bar 3 dimensionecl to liit'snugly into its longitudinal'slot and substantially thicker than the comb-bars commonly used in vthe Wood half-lap. This bar is of sufficient depth from its inner to its outer edge to seat snugly in the bottom of the slot and project outward slightly beyond the peripheral surface of the bed 2, which surface will usually be of cylindrical contour.

Intermediate "of the front and rear sides of the flat comb-bar 3, there is formed a longitudinal slot of substantial depth of a width to snugly receive the butt ends of the row of needles 4C inserted therein. The outer corners of the comb-bars, that would otherwise project beyond the surface of the bed,

-are beveled ofi1 infront of and to the rear of the needles so that the beveled surface exactly meets the peripheral surface ofthe bed 2, as lshown at 3b. lPreferably the rear corners are beveled ofi' in similar fashion and(` owing to the inclination or Obliquity of the bars with relation to the radii of the half-lap, the rear faces will have a longer bevel thanthe front faces. Y

The advantages of this construction are found in the fact that equally with the Wood form of half-lap it prevents objectionable ac-` cumulation of lint beneath the overhanging i points of the needles, affords the best possible exposure of the entire projecting portions of the needles to the action of the brushes, while at the saine time providing a very strongand firm support for the needles and avoiding the vformation of minute cracks or crevicesthat sometimes result from the fialing of the solderL on the front face lof the bar when the needles are soldered to v the front face, according to` previous practice. It is also'possible to make an exact and accurate fit between the comb-bar and the edges of the receiving slot so that there is no opportunity for the lodgrnent and ac-l Y l. In a half-lap for combing fibers,-the' combination with an arcuate bed having a cylindrical peripheral surface with a series ofV longitudinal inwardly extending slots formed therein, a series of comb-bars fitted snugly into said slots each with itsl outerV edge portion Vprojecting*somewhat beyond said peripheralsurface, such projecting portion being'beveled at front and rear to leave opposite inclined faces outside the peripheral face, and a row of needles imbedded in said bar between the beveled faces with their points projecting outward.

2. A combbar for a half-lap embracing a fiat longitudinal barV adapted to be snugly fitted into a receivingrslot in the half-lap bed, said bar having a longitudinal slot formed in its outer face intermediate of its front and rear faces, a row of needles secured in said slot with their points projecting outward, the corner of said bar in front of the needles being beveled off to approxi mately meetrthe adjacent edge of its slot when the bar is inserted.

3. A comb-bar for a half-lap embracing in its construction a longitudinal bar with fiat forward and rear faces adapted to be snugly inserted in al corresponding slot in the bed of a half-lap, said bar being provided with a longitudinal channel intermediate of its front and rear faces and extending inwardly from its outer face, a row of needles secured side by side in said channel with their points projecting outwardly therefrom, the front and rear outer corners of said bar being oppositely beveled from the line of needles to a point corresponding with'the In witness whereof, I have subscribed the` above specification.

JAMES K. LANNING. 

